我做了一个Python的“强盗语言”翻译程序，对吗？

Question

所以我只是个Python迷，我在做这个练习：

"Write a function translate() that will translate a text into "rövarspråket" (Swedish for "robber's language"). That is, double every consonant and place an occurrence of "o" in between. For example, translate("this is fun") should return the string "tothohisos isos fofunon"."

我能做到这一点这是我的代码：

def translate (var1):
    vaw = ['b','c','d','f','g','h','j','k','l','m','n','p','q','r','s','t','v','w','x','z']
    var1 = list(var1)
    for string  in var1:
        if string == string in vaw:
           var1[var1.index(string)] = string + 'o' + string
    print ''.join(var1)

我想知道这是正确的还是有其他方法可以用更少的代码来实现？